ply membranes in flat roofing. A system .. Where a surface finish, ballast, paving slabs, or decking .. Woodwool is very rarely used in new construction. If.
information on all aspects of Flat Roofing, Waterproofing and .. Derbigum was winner of the Flat Roofing Alliance 2004 Product .. woodwool slab deck.
Suitable deck's for use beneath Sika-Trocal roofing systems include profiled metal sheet, plywood, oriented strand board (OSB), timber, woodwool cement slab,.
The material used for the roof deck must be moisture resistant and will usually be plywood, OSB or timber boards although concrete and woodwool slab or.
Woodwool is a building board suitable for carrying lime or clay renders and plasters. It is made from mineralised wood, giving a board that is breathable "vapour.
Precast concrete slab. 78. Timber joists. 90 . Timber batten on concrete slab raised access floor. 45. Disposal . Woodwool decking to flat roof. Bitument felt.
5 Aug 2016 . Want to know is it possible to overlay an existing flat roof with Single Ply? . Woodwool slabs must be considered as a fragile roof deck.
The surface should be wood float finished and the slab allowed to cure thoroughly and dry out to provide a suitable surface to . OSB used for flat roof decking should be type OSB/3 or OSB/4, conforming to BS EN 300:1997. . Woodwool slabs.
The techniques of concrete flat roof retro-insulation are essential knowledge be able to design and specify correctly. . The roof deck is kept warm through placing the insulation above it. . Mineral wool slab (adhered / mechanically fixed)* . Gas fuelled heating · Wood fuelled heating · Radiators & underfloor heating · Solar.
It should be taken into account that other flat roofing materials .. Roof decks of wood wool slabs should be formed from slabs conforming to. Type SB of BS.
19 Aug 2016 . When to use single ply membranes for a flat roof overlay . Even stripping back to the original roof deck may not give the required . Woodwool slabs were also used to fully over screed with a minimum 50mm screed thickness.
2 Jun 2017 . This answers the question about the building material woodwool: what . to slabs to be used in decking, insulating boards and even roof slabs.
20 Oct 2012 . . old flat roofs with new EPDM flat roofs, when we removed the old flat r. . old flat roof we found the flt roof decking was this stramit board some.
His mas ter's the sis dealt with wa ter leak age in flat roofs in Tu ni sia, and he wrote a Build ing Is sue on the topic in 1989. He is the house ex pert . ther mal in su la tion as 100 mm of wood wool slab re quires about 4 m nat u ral stone, 1.8 m.
Woodwool Slab Deck. Dryseal Drawing Woodwool Slab Deck. Installing the Dryseal flat roofing system on a woodwool slab deck with a warm roof build up.
It was used generally during the 1960s to provide insulation often at roof level . Woodwool boards were used both as a permanent shuttering to flat slabs but.
Planning permission is unlikely to be required for the re-covering of flat roofs ... Wood wool slabs used for flat roof decking will typically be 50-75mm thick.
Warm deck flat roof insulation is now the standard way to insulate a flat roof – click to enlarge . Wood fibre batts (adhered / mechanically fixed), 300, 0.22. 400, 0.17. 500, 0.15. Mineral wool slab (adhered / mechanically fixed), 150, 0.22.